There are a huge number of rubber dome keyboards I absolutely hate. After I got my first IBM Model M keyboard, I just can't stand bottoming out every time I press a key. The Model M is infinitely better simply because the Model M registers each key stroke about half way to the keyboards circuit board. Ever since I began using the Model M I don't have the wrist strain I used to get while using later models of rubber dome keyboards. So there are literally hundreds of keyboards I refuse to use.